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Home >> Buick >> 2017 >> LaCrosse Base >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Automatic Transmission - AISIN AF50-8 (MRC) >> Diagnostic Information and Procedures >> DTC P0601, P0602, P0603, or P0604: Control Module Memory/Programming >> Circuit/System Description
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Circuit/System Description

This diagnostic applies to microprocessor integrity conditions within the control module. This diagnostic also checks if the control module is not programmed, or is programmed incorrectly..

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